The long-run Phillips curve shows the relationship between ________ and ________ when the economy is at full employment
A) the inflation rate; the nominal interest rate
B) the unemployment rate; real GDP
C) potential GDP; the natural unemployment rate
D) the inflation rate; the unemployment rate
E) the natural inflation rate; the unemployment rate
D
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When using regression analysis for forecasting, the confidence interval indicates
A) the degree of confidence that one has in the equation's R2. B) the range in which the value of the dependent variable is expected to lie with a given degree of probability. C) the degree of confidence that one has in the regression coefficients. D) the range in which the actual outcome of a forecast is going to lie.
The following accompanying table shows the relationship between the speed of a computer's CPU and its benefits and costs. Assume that all other features of the computer are the same (that is, CPU speed is the only source of variation), and only the CPU speeds listed below are available for purchase.CPU GHzTotal BenefitMarginal BenefitTotal CostMarginal Costs2.0$1,000 $900 2.5$1,400 $1003.0 $300$1,200 3.5$1,900 $1,500 4.0$2,000 $400 The total cost of a 2.5GHz computer is:
A. $200. B. $1,000. C. $900. D. $100.